He met many problems ______ he was going over his lessons.
#58104
A
before
B
as soon as
C
since
D
while
推荐题目
______Liu Wei has no hands, he can play the piano very beautifully.
#58346
A
If
B
Unless
C
Because
D
Although
He met many problems ______ he was going over his lessons.
______Liu Wei has no hands, he can play the piano very beautifully.